{"product_id":"mst-cryogenic-conical-tubes-1-5ml-ppc-2203948080e1","title":"1.5 mL Caps, Conical Bottom, PPC, Natural — 220-3948-080 | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e1.5 mL Cryogenic Conical-Bottom Tubes — MST™ PPC, Natural, Non-Sterile (220-3948-080)\u003c\/h2\u003e\n\u003cp\u003eThese 1.5 mL MST™ cryogenic conical-bottom tubes from Caplugs® Evergreen are constructed from polypropylene copolymer (PPC), a material selected specifically for its flexibility and crack resistance at cryogenic temperatures where standard polypropylene homopolymer becomes brittle. Supplied non-sterile in sealed 1000\/Bag packaging, part number 220-3948-080 is rated for the full cryogenic range — from −80 °C ultra-low temperature (ULT) freezers through liquid nitrogen (LN₂) immersion at −196 °C — making these tubes a dependable choice for biobanks, clinical labs, and research institutions.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e220-3948-080\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e1.5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical Bottom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Style\u003c\/td\u003e\n\u003ctd\u003eSnap Cap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCryogenic Rating\u003c\/td\u003e\n\u003ctd\u003eLN₂ \/ Vapor-Phase N₂ \/ −80 °C ULT (to −196 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene Copolymer (PPC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e1000\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLong-term cryogenic storage of cell lines, primary cells, and tissue samples in LN₂ or vapor-phase nitrogen\u003c\/li\u003e\n\u003cli\u003eDNA, RNA, and genomic material archiving in −80 °C ULT freezers\u003c\/li\u003e\n\u003cli\u003eSerum, plasma, and clinical biospecimen aliquoting and cryopreservation\u003c\/li\u003e\n\u003cli\u003eBiobanking workflows requiring consistent tube geometry and reliable cap seal integrity across large sample cohorts\u003c\/li\u003e\n\u003cli\u003eDry ice shipment of frozen samples for inter-facility transport\u003c\/li\u003e\n\u003cli\u003ePost-thaw centrifugation and microvolume recovery — the conical bottom concentrates pellets and small-volume samples at the tube tip for complete retrieval\u003c\/li\u003e\n\u003cli\u003eCAP-, CLIA-, and ISO 15189-regulated environments where lot-level traceability is required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (e.g., toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eLimited — not recommended for extended contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents (e.g., chloroform, DCM)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA at Caplugs® Evergreen ISO-certified manufacturing facilities from virgin-grade, FDA-compliant PPC resin, these tubes are free of BPA, phthalates, and latex. Every bag ships with a lot number and manufacturing date to support full chain-of-custody documentation in CAP-, CLIA-, and ISO 15189-accredited laboratories. LabSupplies.com is an authorized Caplugs® Evergreen dealer maintaining domestic inventory, which means no offshore lead-time risk and same-business-day fulfillment for stocking quantities. Tiered pricing is available for high-volume and grant-funded procurement.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these tubes suitable for direct liquid nitrogen immersion?\u003c\/strong\u003e\u003cbr\u003eYes — the PPC construction is rated for liquid nitrogen storage at −196 °C as well as vapor-phase nitrogen and −80 °C ULT freezer conditions. PPC retains flexibility at cryogenic temperatures where standard polypropylene homopolymer becomes brittle, reducing the risk of cracking or seal failure during freeze-thaw cycles.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these tubes sterile?\u003c\/strong\u003e\u003cbr\u003eNo — these tubes are supplied non-sterile. For applications requiring sterility, confirm whether your workflow permits pre-use decontamination, or contact LabSupplies.com to inquire about sterile alternatives in the MST™ line.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does the conical bottom design offer compared to a round-bottom tube?\u003c\/strong\u003e\u003cbr\u003eThe conical bottom concentrates cell pellets, precipitates, and small-volume samples at the tip of the tube, enabling complete microvolume recovery after thawing and centrifugation — an important advantage in biobanking and cell-culture workflows where minimizing sample loss is critical.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes each bag carry lot-number documentation for regulated laboratories?\u003c\/strong\u003e\u003cbr\u003eYes — every 1000\/Bag unit of 220-3948-080 is labeled with a lot number and manufacturing date, supporting the traceability requirements of CAP-, CLIA-, and ISO 15189-accredited clinical and research laboratories.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"1.5 mL Cryogenic Conical-Bottom Tubes, MST™ PPC, Natural, Non-Sterile — 1000\/Bag\",\"sku\":\"2203948080E1\",\"mpn\":\"220-3948-080\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"81.43\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these tubes suitable for direct liquid nitrogen immersion?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes — the PPC construction is rated for liquid nitrogen storage at −196 °C as well as vapor-phase nitrogen and −80 °C ULT freezer conditions. PPC retains flexibility at cryogenic temperatures where standard polypropylene homopolymer becomes brittle, reducing the risk of cracking or seal failure during freeze-thaw cycles.\"}},{\"@type\":\"Question\",\"name\":\"Are these tubes sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — these tubes are supplied non-sterile. For applications requiring sterility, confirm whether your workflow permits pre-use decontamination, or contact LabSupplies.com to inquire about sterile alternatives in the MST™ line.\"}},{\"@type\":\"Question\",\"name\":\"What does the conical bottom design offer compared to a round-bottom tube?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The conical bottom concentrates cell pellets, precipitates, and small-volume samples at the tip of the tube, enabling complete microvolume recovery after thawing and centrifugation — an important advantage in biobanking and cell-culture workflows where minimizing sample loss is critical.\"}},{\"@type\":\"Question\",\"name\":\"Does each bag carry lot-number documentation for regulated laboratories?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes — every 1000\/Bag unit is labeled with a lot number and manufacturing date, supporting the traceability requirements of CAP-, CLIA-, and ISO 15189-accredited clinical and research laboratories.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48555885396200,"sku":"2203948080E1","price":81.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/220-3948-080_01.jpg?v=1778721705","url":"https:\/\/labsupplies.com\/products\/mst-cryogenic-conical-tubes-1-5ml-ppc-2203948080e1","provider":"LabSupplies.com","version":"1.0","type":"link"}